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This is my estimate of tablebase complexity ( see #1187 ):
6 men: 2.03e+013
7 men: 2.36e+015
It is known that the 6 men tablebase requires 1.2 TB of storage.
To calculate the storage requirement from the complexity, you have to divide the 7 men complexity by the 6 men complexity and multiply this by 1.2 TB:
If you do the calculation this formula predicts that the 7 men tablebase should take 139.5 TB of space.
It is known that it uses 140 TB, so the complexity estimate predicts its size almost perfectly.
Estimated storage requirement for tablebases up to 12 men:
8 men : 13 Petabyte
9 men : 1.1 Exabyte
10 men : 74 Exabyte
11 men : 4.4 Zettabyte
12 men : 235 Zettabyte
Storage on the order of Petabytes is already happening:
fantastic!! must remember!!
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